duryea



2 Sheets-Sheet 1.

(No Model.)

0. E. DURYEA.

TRIGYGLE.

Patented Apr 6, 1886.

S e 6 m N, PETERS. PlmmLilm n hu. wshinglon, ac.

(No Model.) 2 Sheets Sheet 2.

G. B. DURYEA.

TRIGYGLB.

No. 339,537. Patented Apr. 6,1886.

llnirnn STATES PATENT Urrrcn.

CHARLES E. DURYEA, OF ST. LOUIS, MISSOURI, ASSIGNOR TO CHARLES H. STONE,OF SAME PLACE.

TRICYQLE.

fiPECIFICATION forming part of Letters Patent No. 339,537, dated April6,1886.

Application filed July 6, 1885. Serial No. 170,819. (No model.)

To all whom it may concern:

Be it known that I, Cnanrns E. DURYEA, of St. Louis, Missouri, have madea new and useful Improyement in Tricycles, of which the following is afull, clear, and exact description.

The improvement is an attachment which can be applied to an ordinarytricycle of the loop-frame type, converting it into a tandem tricyclecapable of carrying and of being propelled by two persons.

The annexed drawings, making part of this specification, illustrate theimprovement and the mode of applying it.

Figure 1 is aview in perspective of a tricycle with the attachmentapplied. Fig. 2 is a side elevation of the same. Fig. 3 is asection onthe line 3 3 of Fig. 2. Fig. lis asection on the line at 4; of Fig. 2.Fig. 5 is a view in perspective of the attachment, saving that theadditional sprockct-wheel required is shown in broken lines, and theextra length of chain needed is not exhibited; and Fig. 6 is a sideelevation of that form of tricycle to which the improvementis adapted.

The same letters of reference denote the same parts.

A, Figs. 6, 1, 2, represents the tricycle of the kind named as beingsuited to receive the attachment. B 13 represent the large wheels; 0,their axle; D, the small wheel in front; E, the saddle; F, thesprocket-wheel upon the axle C; G, the sprocket-wheel upon thedriving-shaft II; II, thepedals; J, the chain which transmits the motionof the driving-shaft and sprocketwheel G to the sprocket-wheel F andaxle C; K K, the handles upon the arms 71', and L the loop-fra1nc, allconstructed and assembled in the customary manner.

M, Figs. 5, 1, 2, represents the attachment. Its main feature is a(generally considered) U-sha-ped frame, m, supporting at one end asaddle-post, m, and saddle m and at or toward the other end acrankshaft, m, and pedals m m". The frame in is provided with orconstructed to form suitable bearings,m m in which the crank-shaft isjournaled. It is also supplied at its sides, respectively, with arms mm, which extend from the sides at m upward to co1nc,when the attachmentis applied, 50 against the sides Z Z, respectively, of the loopframe Lof the tricycle in the region of the axle O; or, if preferred, againstsleeves or clips, or structures analogous thereto, upon the axle G. Thearms at m are preferably extended still farther, and substantially asrepresented at m or, Figs. 1, 2, 5, to form supports for the handles onm. The frame m is also supplied with a sprocket-wheel, m which isjournaled upon a bearing upon the frame, and with the clips m m and theclips an" m The attachment above described can be attached to thetricycle as represented in Figs. 1, 2. The end an of the frame at restsupon and is secured to the lower end, Z, of theloopframe, and the sideson m extend from the end Z backward beneath the axle G and beyond it,and so as to bring the crank-shaft m and pedals of of into a suitableposition to be operated bya person in the saddle E,which is now faced inthe opposite direction from that when the tricycle is used without theattachment. The attachment is fastened in position by first slipping theclips at in" and then the clips or on around the bar or frame end Z,which operation brings the attachment into its proper relation to thetricycle, and then fastening, by means of a suitable bolt, an, the armsm m to the sides Z Z, respectively, of the loop-frame L. The change iscompleted and the now twoseated tricycle made ready for use by carryingthe chain J ,which may be an extension of the chain J, around the threesprocketwheels F, G, and an, as shown in Figs. 1, 2.

I am aware that two-seated tricycles have heretofore been used; and Idonot claim such, broadly, my aim being to provide an attachment which canbe readily attached to and detached from a tricycle having a loop-frame,and thus provide one or two seats, as desired.

In carrying out the improvement I do not desire to be confined to theparticular means here shown for securing the attachment in its positionupon the tricycle. Any suit-able clamps or ties may be substituted forthe clips m m and the bolts an m. Nor is it essential that the frame mat its end m be shaped to conform to the loop-frame L. Tricycles havinga loop-frame are variously shaped,and it will be found desirable tosomewhatmodify the shape of the attachment here and there, to best adaptit to the special shape of the tricycle to which it is being applied;nor is it al ICQ ways essential that the saddlemfibe supported from theattachment; nor that the arms m m be extended at m m to support thehandles m m, as the parts in m m might be otherwise upheld. It is muchbetter, however, to associate these last-named parts immediately withthe attachment, as described, as thereby all that is necessary, savingthe chain, to convert the tricycle into a two-seat one can be suppliedin asingle part. The tricycle, when provided with the attachment, facesin the opposite direction, the'saddle E, as stated, being turned aroundupon its support, and the steering-wheel, instead of being in front, isin the rear of thelarge wheels, as shownin Figs. 1, 2.

I claim 1. The attachment M, consisting of the frame an, provided withthe post and saddle m m*, the crank-shaft and pedals m m m", the arms mm, extended and provided with the handles m m", the clips m m, and thesprocket-wheel m substantially as described.

2. The combination of the frame m, shaped as described, with thecrank-shaft and pedals m m m", the arms m m and the sides m m, with theloop-frame L, having sides Z Z, substantially as described.

3. The combination of the frame m, having the arms m m,with theloop-frame L, having sides Z Z, substantially as and for the purposedescribed.

4. The combination of the frame m, the arms m m, the post and saddle onm and the crankshaft and pedals of Wm, the sprocket-wheels m G, and F,and chains J J, substantially as described.

5. The combination of the attachment M, as described, with the post andsaddle m m the pedals I and m, the loopfra-me L, and the sprocket-wheelsand the chains, all as de- 0 scribed.

Vitness my hand.

CHARLES E. DURYEA. Witnesses:

C. D. MoonY, H. I. COE.

